x2+4x+17=8-2x

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Solution for x2+4x+17=8-2x equation: 



x2+4x+17=8-2x

We move all terms to the left:

x2+4x+17-(8-2x)=0

We add all the numbers together, and all the variables

x2+4x-(-2x+8)+17=0

We add all the numbers together, and all the variables

x^2+4x-(-2x+8)+17=0

We get rid of parentheses

x^2+4x+2x-8+17=0

We add all the numbers together, and all the variables

x^2+6x+9=0

a = 1; b = 6; c = +9;
Δ = b2-4ac
Δ = 62-4·1·9
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{-6}{2}=-3$

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